Running sfc /scannow sometimes does need to run several times. What happens is lets say (for simple state) theres 5 problems, it may fix 1 at a time,...
likely a chipset driver or similar is missing.
If you right click the device, hit properties, then go to the 'details' tab, you can select 'Hardware...
When I was a sole trader many years ago in the UK my accountant told me to always make sure enough went through my books to show I was earning enough...
1st thing I would do is copy all the data on the other drives to another external source. Just in case it all turns to custard, easier to do a backup...